<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script type="text/javascript" src="./js/ctx.js"></script>
</head>
<body>
<div id="cesiumContainer">
</div>
<div id="toolbar">
    <table><tbody>
    <tr>
        <td>Ambient Occlusion</td>
        <td><input type="checkbox" data-bind="checked: show"></td>
    </tr>
    <tr>
        <td>Ambient Occlusion Only</td>
        <td><input type="checkbox" data-bind="checked: ambientOcclusionOnly"></td>
    </tr>
    <tr>
        <td>Intensity</td>
        <td><input type="range" min="1" max="10" step="1" data-bind="value: intensity, valueUpdate: 'input'"></td>
    </tr>
    <tr>
        <td>Length Cap</td>
        <td><input type="range" min="0" max="1" step="0.01" data-bind="value: lengthCap, valueUpdate: 'input'"></td>
    </tr>
    <tr>
        <td>Step Size</td>
        <td><input type="range" min="1" max="10" step="0.01" data-bind="value: stepSize, valueUpdate: 'input'"></td>
    </tr>
    <tr>
        <td>Bias</td>
        <td><input type="range" min="0" max="1" step="0.01" data-bind="value: bias, valueUpdate: 'input'"></td>
    </tr>
    <tr>
        <td>Blur Step Size</td>
        <td><input type="range" min="0" max="4" step="0.01" data-bind="value: blurStepSize, valueUpdate: 'input'"></td>
    </tr>
    </tbody></table>
</div>
<script>
    var initCesium = new InitCesium();
    var viewer = initCesium.initViewer('cesiumContainer');

    if (!Cesium.PostProcessStageLibrary.isAmbientOcclusionSupported(viewer.scene)) {
        console.log('This browser does not support the ambient occlusion post process.');
    }

    // Power Plant design model provided by Bentley Systems
    var tileset = new Cesium.Cesium3DTileset({ url: Cesium.IonResource.fromAssetId(8564) });
    tileset.readyPromise.then(function(tileset) {
        viewer.scene.primitives.add(tileset);
    }).otherwise(function(error) {
        console.log(error);
    });

    var viewModel = {
        show : true,
        ambientOcclusionOnly : false,
        intensity : 3.0,
        bias : 0.1,
        lengthCap : 0.03,
        stepSize : 1.0,
        blurStepSize : 0.86
    };

    Cesium.knockout.track(viewModel);
    var toolbar = document.getElementById('toolbar');
    Cesium.knockout.applyBindings(viewModel, toolbar);
    for (var name in viewModel) {
        if (viewModel.hasOwnProperty(name)) {
            Cesium.knockout.getObservable(viewModel, name).subscribe(updatePostProcess);
        }
    }

    function updatePostProcess() {
        var ambientOcclusion = viewer.scene.postProcessStages.ambientOcclusion;
        ambientOcclusion.enabled = Boolean(viewModel.show) || Boolean(viewModel.ambientOcclusionOnly);
        ambientOcclusion.uniforms.ambientOcclusionOnly = Boolean(viewModel.ambientOcclusionOnly);
        ambientOcclusion.uniforms.intensity = Number(viewModel.intensity);
        ambientOcclusion.uniforms.bias = Number(viewModel.bias);
        ambientOcclusion.uniforms.lengthCap = Number(viewModel.lengthCap);
        ambientOcclusion.uniforms.stepSize = Number(viewModel.stepSize);
        ambientOcclusion.uniforms.blurStepSize = Number(viewModel.blurStepSize);
    }
    updatePostProcess();

    var camera = viewer.scene.camera;
    camera.position = new Cesium.Cartesian3(1234127.2294710164, -5086011.666443127, 3633337.0413351045);
    camera.direction = new Cesium.Cartesian3(-0.5310064396211631, -0.30299013818088416, -0.7913464078682514);
    camera.right = new Cesium.Cartesian3(-0.8468592075426076, 0.1574051185945647, 0.507989282604011);
    camera.up = Cesium.Cartesian3.cross(camera.right, camera.direction, new Cesium.Cartesian3());


</script>
</body>
</html>